From: Alex Elder <elder@dreamhost.com>
Date: Mon, 23 Jan 2012 21:49:27 +0000 (-0600)
Subject: ceph: use a shared zero page rather than one per messenger
X-Git-Tag: v3.4-rc1~76^2~58
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5766651971e81298732466c9aa462ff47898ba37;p=pandora-kernel.git

ceph: use a shared zero page rather than one per messenger

Each messenger allocates a page to be used when writing zeroes
out in the event of error or other abnormal condition.  Instead,
use the kernel ZERO_PAGE() for that purpose.

Signed-off-by: Alex Elder <elder@dreamhost.com>
Signed-off-by: Sage Weil <sage@newdream.net>
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